G23 Compression Platens

G23 platens are for static compression tests on bio materials, wood, composites, metals, concrete and other applications where uniform stress distribution is critical.

They mount to the crosshead of the frame and available with adapters that enable them to be used on almost any test machine. Inscribed concentric circles ensure proper, centered placement of the specimen, increasing the validity of test results.

Note that in the case of testing brittle materials, if platens are not parallel with specimen surfaces, the initial contact will result in a point contact on the edge of the specimen, creating a stress concentration that can initiate failure, or induce a bending moment into the specimen and cause premature failure.

Model: #G23

Force: Depends on material choice, size and machine adapter type

Diameter: Standards version - 56 mm (2.2 in) to 346 mm (13.6 in)

Temperature: Depends on material chioce

Features & Benefits

• Enables uniform compression stress distribution tests
• Available as spherical or fixed platens
• Available in steel, lightweight aluminum, bio-compatible delrin, or stainless steel construction
• Available in a wide range of dimensions with test machine adapter to match your existing test machine

G223 Spherical Seat Compression Platens

G223 Spherical seated compression platens handle angular movement (to ~1.5 degrees) of the specimen top surface with reference to the machine’s loading axis. The Spherical seat of the platen enables it to self align to the surface of the specimen so that it provides aligned contact. These fixtures meet ASTM E9 and other industry standard tests, which state: “the spherical surface of the block shall be defined by a radius having its point of origin in the flat surface that bears on the specimen." They are mounted to the crosshead of the test machine and typically used with a fixed compression platen mounted to the machine base. The fixtures adjust to sample end cut variations or can be preset at the adjusted angle by hand tightening the bolts to resist platen rotation during the test. They are hardened steel plate. Other tests include ASTM C109, ASTM C165 and ASTM C469.

Model: #G223

Diameter: 56 mm to 196 mm (2.2 in. to 7.7 in.)

Temperature: 280°C (536°F)

Features & Benefits

• Steel black oxide spherical seat compression platen for uniform distribution tests
• Available in floating and fixed configurations
• Available in a wide range of dimensions with machine adapters to fit existing test machines

G36 Rectangular Compression Platens

Model: #G314

Force: 20 kN (4,500 lbf)

Features & Benefits

• Steel, light duty anodized aluminum
• T-slotted fixed compression platen
• Enables uniform stress distribution tests
• Available in a variety of configurations, materials, and range of sizes

G42 Compression Spherical Indentation and Bolster Test Probe

Model: #G42

Force: 20 kN (4,500 lbf)

Diameter: 10 mm (0.4 in) - all other diameters available made to order

Temperature: 200 C (392 F)

Features & Benefits

• Steel black oxide compression probes for point loading stress tests
• Available in a large variety of materials, probe diameters, and machine adapters
• Available for testing in high temperatures